NO3-N

Y553-A Optical Nitrate Nitrogen Sensor

Product Model：
Time: 2026-05-07 14:14:00
Product description：Yosemitech Y553-A nitrate nitrogen sensor uses deep UV absorption dual-beam technology. It delivers stable, fast response without reagents or sample pre-treatment.

Overview

Yosemitech Y553-A nitrate nitrogen sensor uses deep UV absorption dual-beam technology. It delivers stable, fast response without reagents or sample pre-treatment. Its flexible installation supports all-weather continuous monitoring of nitrate changes during nitrification and denitrification. A built-in compensation channel corrects for organic interference in real time, and an automatic cleaning device ensures reliable long-term online operation.

Features

- RS485 interface, standard MODBUS protocol for easy integration;　　　　　
- Deep UV absorption dual-beam optical method for high accuracy and strong anti-interference performance; 　　　　　　
- Automatic compensation for organic interference, delivering excellent measurement performance;
- Built-in self-cleaning brush to prevent biofouling and extend maintenance intervals;
- Built-in calibration parameters for convenient on-site operation and recalibration.　　　　　

Specifications

Name	Y553-A Nitrate Nitrogen Sensor
Measuring principle	Deep ultraviolet absorption method
Range	0 - 50 mg/L, other measurement ranges are available
Accuracy	±5% or 1 mg/L
Resolution	0.01 mg/L
Response time	30s
Temperature range	0 - 50℃
IP range	IP68
Interface	RS485,MODBUS protocol
Power	0.25W (non-wiping) 1W (wiping)
Suggest power supply	DC 12-24V, ≥1A
Size	Φ46mm*189.5mm (with protective cover)
Cable length	10 meters (default), customizable
Shell material	316L (customizable titanium alloy)